冬季行人滑落和摔倒伤害-天气预警服务在预防预防方面的有效性
Reija Ruuhela1, Marjo Hippi1, Sari Hartonen1
1Finnish Meteorological Institute, Helsinki, Finland.
Scandinavian journal of public health
|June 5, 2024
概括
芬兰关于冬季滑动的早期警告并没有显著减少行人滑落和摔倒的伤害. 需要改善个人行为,冬季维护和行人天气服务.
科学领域:
- 公共卫生 公共卫生
- 环境科学 环境科学
- 运输安全运输安全
背景情况:
- 冬季行人滑落和摔倒的伤害会导致大量的医疗保健和社会成本.
- 自2004年以来,芬兰气象研究所 (FMI) 提供了行人天气服务,以减轻这些风险.
- 国际货币基金组织天气服务的持续发展旨在提高其效率.
研究的目的:
- 评估FMI早期滑动警告在预防芬兰行人受伤方面的有效性.
- 分析行人滑落和摔倒伤害的趋势,并将其与天气预警相关联.
- 确定行人安全的天气服务链中需要改进的领域.
主要方法:
- 来自芬兰工人赔偿中心的关于行人滑倒伤害 (2005-2022) 的时间序列数据的分析.
- 来自FMI档案 (2011-2022) 的每日滑动人行道警告的检查.
- 天气服务链分析 (WSCA) 使用滑落事故故事情节来确定服务缺口.
主要成果:
- 在研究期间,在行人滑落和摔倒伤害的数量上没有观察到显著的趋势.
- 根据地区和冬季严重程度,人口暴露于滑动条件的情况有所不同.
- 发现用户对滑动性警告的反应可能不足.
结论:
- 个人行为改变和加强冬季人行道维护至关重要.
- 促进步行在城市和交通规划中的作用和安全是必要的.
- 为了更大的影响,需要对行人天气服务进行进一步的增强.
相关概念视频
Frost Action on Concrete
94
Concrete structures in cold climates, such as those along roadsides, can retain moisture. This moisture makes them susceptible to frost-related damage when temperatures fall below freezing. Adding moisture worsens the damage during temperature fluctuations, leading to repeated freezing and thawing. De-icing salts, spread over these structures to melt ice, add to the freeze-thaw cycle, and draw even more moisture into the concrete.
This freeze-thaw cycle primarily causes surface scaling, where...
This freeze-thaw cycle primarily causes surface scaling, where...
94
Cold Weather Concreting
70
When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
To counteract the negative impacts of cold weather, ensuring...
To counteract the negative impacts of cold weather, ensuring...
70
Design Example: Managing Concrete Workability
80
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
80
Frost Resistant Concrete
75
Concrete's susceptibility to frost damage during freeze-thaw cycles demands strategic measures to enhance its frost resistance. Employing techniques like air entrainment, adjusting the water-cement ratio, proper curing, and selecting appropriate aggregates are essential.
Introducing microscopic air bubbles into the concrete mix through air entrainment creates small voids that accommodate ice expansion, thereby reducing internal pressures and preventing cracking. The optimal amount of...
Introducing microscopic air bubbles into the concrete mix through air entrainment creates small voids that accommodate ice expansion, thereby reducing internal pressures and preventing cracking. The optimal amount of...
75
Masonry in Cold and Hot Weather Conditions
83
In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
Other key practices include keeping masonry units...
Other key practices include keeping masonry units...
83
Decreased Body Temperature
607
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
607


